Require air duct cleaning in Baltimore? Flip Air Duct Cleaning Baltimore is a family-owned and operated company that offers air duct cleaning and all things heating, air conditioning and ventilation. Our services include fixing, cleaning and sealing air vents. We have been providing our excellent heating and air conditioning services in the Highlands Ranch, Littleton, Parker, Castle rock, and the entire Baltimore for almost 15 years. Call us today for vent cleaning in Baltimore.